GB - 15
Mulching Tips
For best mulching performance, cut no more
than 1 inch (2.54cm) of grass per cutting.
Gravely Dealers will provide any service,
parts or adjustments which may be required
to keep your unit operating at peak efficiency.
Should engine require service, contact a
Gravely Dealer or an authorized engine
manufacturer's service center.
MAINTENANCE SCHEDULE
NOTE: Some working conditions (heavy
loads, high ambient temperatures, dusty
conditions, or airborne debris) may require
more frequent service.
See engine manual for further maintenance
and troubleshooting information.
After first 5 Hours of operation
CHECK ENGINE/BLADE
CONTROL
The engine and blade must stop within 3
seconds after releasing the control. If the
engine and blade continue to run, adjust or
repair control immediately. See Engine/Blade
Control Adjustment on page18.
CHECK WHEEL DRIVE CONTROL
(self-propelled models)
The unit must stop quickly and completely
when the control is released. Adjust or repair
if necessary. See Wheel Drive Control
Adjustment (self-propelled models) on
page20.
CHECK GRASS BAG
Check grass bag frequently for wear or
deterioration. Replace worn or damaged bag
with Gravely original equipment replacement
bag only.
CLEAN UNIT
Before each use clean unit, muffler and
engine surfaces of debris, oil or fuel spills to
ensure proper cooling and prevent fires.
CHECK ENGINE OIL
IMPORTANT: Maintain proper oil level at all
times or engine damage will result.
Check the level of the engine crankcase oil
before each use.
Make sure engine is level when checking oil.
See engine manual for instructions.
CHECK MOWER BLADE
See Figure8.
Check blade mounting: blade must be secure
and bolt torqued to 37.5 - 50lbf-ft
(51-68N•m) (bolt should f ully compress lock
washer).
Check blade for nicks and dull cutting edges.
Sharpen if necessary.
Check blade for rounded or broken ends,
thinned metal or other damage. Replace if
necessary.
NOTE: Blades should be sharpened and
balanced professionally. Contact your
Gravely Dealer.
To remove blade:
1.Stop engine, wait for all moving parts to
stop, and disconnect spark plug wire.
2.Block blade to prev ent rotation.
3.Remove bolt, lock washer, flat washer
and blade from shaft.
To install blade:
1.Replace blade, flat washer, lock washer
and bolt on shaft.
MAINTENANCE
CAUTION: AVOID INJURY. Read
and understand the entire Safety
section before proceeding.
MAINTENANCE
SCHEDULE
Service Performed Before
Each
Use
25 100
Check Engine/Blade
Control •
Check Wheel Drive
Control •
Check Grass Bag •
Clean Unit •
Check Engine Oil •
Check Mower Blade •
Check Drive Belt •
Check Fasteners •
Check Air Cleaner •
Change Engine Oil •
General Lubrication •
Check Spark Plug •
Check Engine
Cooling •
Check Muffler •
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